RESUMO
Pityriasis lichenoides et varioliformis acuta (PLEVA), or Mucha-Habermann disease (MHD), is a cutaneous disorder evident with crops of erythematous macules and papules, usually on the trunk and flexural areas of the extremities. Its etiology remains unknown. PLEVA is speculated to be an inflammatory reaction triggered by certain infectious agents, an inflammatory response secondary to T-cell dyscrasia, or an immune complex-mediated hypersensitivity. Histologic examination of a skin biopsy specimen is the standard for the identification of PLEVA, but definitive diagnosis may be difficult. Apart from the febrile ulcerative variant, which may be fatal, PLEVA tends to be self-limited in its course. Treatment is targeted mainly at the symptomatic relief of pruritus.
Assuntos
Pitiríase Liquenoide/diagnóstico , Pitiríase Liquenoide/tratamento farmacológico , Adolescente , Corticosteroides/uso terapêutico , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Pré-Escolar , Eritromicina/uso terapêutico , Antagonistas dos Receptores Histamínicos/uso terapêutico , Humanos , Pessoa de Meia-Idade , Fototerapia , Pitiríase Liquenoide/patologia , Tacrolimo/uso terapêutico , Tetraciclina/uso terapêutico , Adulto JovemRESUMO
Minocycline is a commonly used antibiotic for long-term treatment of acne vulgaris. A well-documented and cosmetically dis-pleasing side effect is skin pigmentation. Three distinct types occur: Type I, blue-black/grey pigment on the face in areas of scarring or inflammation associated with acne; type II, blue-grey pigment on normal skin on the shins and forearms; type III, diffuse muddy-brown discoloration in areas of sun exposure. Types I and II stain for iron and melanin extracellularly and within macrophages in the dermis. Type III shows nonspecific increased melanin in basal keratinocytes and dermal melanophages staining for melanin only. The etiology of this pigmentation is unknown, but may be related to polymerized reactive metabolites, insoluble chelation products, and lengthy treatment durations of minocycline compared to other tetracyclines. Types I and II tend to resolve slowly over time, whereas type III persists indefinitely. Treatment involves early recognition, discontinuation of the drug, sun protection, and laser for persistent pigmentation.
Assuntos
Acne Vulgar/tratamento farmacológico , Antibacterianos/efeitos adversos , Hiperpigmentação/induzido quimicamente , Minociclina/efeitos adversos , Antibacterianos/uso terapêutico , Humanos , Minociclina/uso terapêuticoRESUMO
BACKGROUND: Perioral dermatitis is a relatively important and often enigmatic type of eczema. METHODS: We describe a child with this disorder and review our experience and the literature. RESULTS: Clinical features of perioral dermatitis in our patient and in many others described elsewhere show a high prevalence of perinasal and periocular involvement alongside perioral findings. CONCLUSIONS: Perioral dermatitis is more suitably termed periorificial dermatitis.
Assuntos
Dermatite Perioral/patologia , Dermatoses Faciais/patologia , Administração Cutânea , Anti-Infecciosos/administração & dosagem , Criança , Dermatite Perioral/diagnóstico , Dermatite Perioral/tratamento farmacológico , Diagnóstico Diferencial , Dermatoses Faciais/tratamento farmacológico , Humanos , Masculino , Metronidazol/administração & dosagemRESUMO
Klippel-Trenaunay syndrome is characterized by a triad of varicose veins, cutaneous capillary malformation, and hypertrophy of bone and soft tissue. Appropriate evaluation and treatment of children displaying features of the disease may minimize morbidity. The clinical appearance, etiology, genetics, diagnostics, and treatment of Klippel-Trenaunay syndrome are herein explored.
Assuntos
Proteínas Angiogênicas/genética , Síndrome de Klippel-Trenaunay-Weber/diagnóstico , Síndrome de Klippel-Trenaunay-Weber/genética , Humanos , Síndrome de Klippel-Trenaunay-Weber/etiologia , Síndrome de Klippel-Trenaunay-Weber/terapiaRESUMO
Epidermolytic hyperkeratosis is an unusual type of ichthyosis. This inherited keratinization disorder is characterized clinically by erythema, blistering, and peeling shortly after birth. It may resolve and be replaced with thick scaling. It can lead to life-threatening complications, such as sepsis. Histologically, there is a hyperkeratosis and vacuolar degeneration. Genetically, this is an autosomal dominant disease with complete penetrance; however, 50% are spontaneous mutations. The clinical phenotype is a result of alterations in the gene(s) for keratin 1 and/or 10. We review this disorder and its therapy, which is mainly symptomatic with emollients and retinoids.